diff --git a/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
index 6f13da11f593..ee63c03949c9 100644
--- a/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5fss.yaml
@@ -62,6 +62,7 @@ properties:
 patternProperties:
   "^r(.*)@[0-9a-f]+$":
     type: object
+    additionalProperties: false
     description: |
       The RPU is located in the Low Power Domain of the Processor Subsystem.
       Each processor includes separate L1 instruction and data caches and